Oil-burning furnace.



0. A. HAMMEL. OIL BURNING FURNACE. APPLICATION FILED JULY 26, 1006,RENEWED MAY 22, 1908- 935,202, I Patented Sept. 28-, 1909.

2 SHEBTS-BHHET 1- 1g],

c. A. HAMMEL.

OIL BURNING FURNACE.

I APPLICATION FILED JULY 26, 1906. RENEWED MAY 22, 1908. 935,QO2,Patented Sept. 28, 1 909.

2 SHEETS-SHiEiET 2.

UNITED CHARLES A. HAMMEL, or L'os ANGELES, CALIFORNIA.

OIL-BURNING- FURNACE.

Specification of Letters Patent.

Patented Sept. as, moo.

Application filed July 26, 1906, Serial No. 327,956. Renewed May 22,1908. Serial No. 434,373.

To all whom it may concern:

Be it known that I, CHARLES A. HAMMnL, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Oil-BurningFurnaces, of which the following is a. specification.

. My invention relates to heating furnaces in which a plurality ofhydrocarbon burners may be used located in the rear of the combustionchamber or fire box and in which each burner has an independent airinlet leading thereto.

In the drawings :-Figure 1 is a central longitudinal vertical sectiontaken on line 1-l of Fig. 2. Fig. 2 is a transverse section of thefurnace taken on line 2-2 of Fig. 1. Fig. 3 is a sectional plan view inwhich the fioor E of the furnace is partly broken away showing part ofthe floor-sup porting irons F.

In order to more uniformly heat and distribute the air which is fed toeach burner I have provided a separate aperture or channel leading fromthe outside to the rear end of the furnace where the burners aredisposed and to this end the air is fed around the burner and a smallportion thereof into the combustion chamber immediately below and infront of the burner. By providing a separate feeding fine for thepassage into the furnace of air to each burner an excessive amount ofair is prevented from being fed to the burners, which takes place in theordinary furnace when any number of burners arein operation less thanthe whole number. When only a few burners are being used, as thesefurnaces have heretofore. been constructed, the entire air supply isopen to be fed thereto and the result is a superabundance of air willenter the combustion chamber, causing the loss of heat units andrendering the furnace less economical than when the proper amount of aironly is permitted to pass to each burner, In order to economize in theuse of hydrocarbon for furnaces of this character it is necessary thatthe proper amount of air should be fed to each burner and I havetherefore arranged in the furnace herein shown and describedthat onlythe proper quantity of air can get to each burner no matter howmany-burners may be in operation.

.In the accompanying drawings A repre-' no more and no less,

sents a separate flue leading from the outside or front of the furnaceto the rear thcrcof where one of the burners G is located and permitsthe proper volume of air to pass into the combustion chamber B directlyaround the burner C. I find by experience a better result is obtained byfeeding a small portion of this air upwardly into the combustion chamberimmediately in front of and below the burner as through air supply portsI). This air being fed upwardly into the flame immediately in front ofthe burner and being in a heated condition when it is so fed into thecombustion chamber adds to the intensity of the flame and the amount ofheat created thereby, and keeps the flame away from the floor. The airwhich passes through the supply ports 1) passes thereto immediatelyunder the bottom E-of the furnace which rests upon the supporting ironrails F and is therefore fed into the combustion chamber in a heatedcondition.

In a furnace constructed as herein shown the proper amount of air willalways be fed to the burner and this air will always be properly heatedto produce the best results, because it will be fed to the burnerthrough the air flue lying immediately below the floor in front of theburner which isii operation, and the proper amount of heat will alwaysbe thrown off to properly heat the air fed to the burner. In the absenceof a separate flue leading to each burner the air fed to the burner-willflow directly from the inlet supplying all the burners those not inoperation as well as those in operation and as a result when any lessnumber of burners are in operation than the furnace has, the air will becorrespondingly cooler and not in proper heated condition to beeconomically used.

Another feature of my invention to properly heat the air which is fed tothe burner to produce the best results resides in the air receivingpocket H in the rear end of the furnace which connnunicates with the airflue leading from the front. The burner is disposed in the pocket whichis formed by the abutments I and the arches J which project into thecombustion chamber and the pocket is sufficiently large to receive theair in the generous quantity so as to permit the air to move slowlypassing through to the' combustion chamber to become thoroughly heated.The air receiving pocket H opening directly into the combustion chamberis exposed to the radiating heat therefrom and adds heat to the airwhich is fed thercthrough. To further protect the burner and the oil andsteam pipes leading thereto from the intense heat from the fire box theburner and the pipes are placed in the veriical recess K formed in therear of the pocket ll. This recess is so arranged as to receive thepipes and hold them so to keep the burner in its proper position. Thisaffords ready means to enable me to crowd the burner into its properposition in the rear end of the furnace without any other appliances.

The entire bottom or floor of the furnace inclines rearwardiy so as todeflect the heat radiating upwardly from the hottom away from the frontof the furnace thereby fully utilizing the heat units and directing theheat to that portion of the furnace whereby the elliciency of the boileris greatly enhanced.

What- I claim as new and desire to secure by Letters Patent is 2* 1. Anoil burning furnace, the entire bottom of which inclines rearwardlywhereby to deflect the heat away from the front of the furnace, and aburner located in proximity to the rear end of said bottom anddischarging intoihe combustion chamber over,

the bottom.

2. An oil burning furnace, the entire bottom of which inclinesrearwardly whereby to deflect the heat away from the front of thefurnace, and a burner located in proximity to the rear end of saidbottom and discharging into the combustion chamber over the bottom, saidburner operated and controlled from the forward end of the furnace.

3. An oil burning furnace, the entire bot tom of which inclinesrearwardly having air inlets through the lower end thereof, Whereby .todeflect the heat away from the front of the furnace, and a burnerlocated in proximity to the rear end of said bottom and discharging intothe combustion chamber over the bottom.

4. A furnace having itsentire bottom inclining rearwardly whereby todeflect the heat away from the front of the furnace, a plurality ofhydro-carbon burners discharging directly into a combustion chamber, aseparate .air flue for supplying air to each burner, said burnerslocated at one end of the furnace and discharging at the other endforwardly whereby a separate supply of air is fed directly to eachburner.

In a hydrocarbon furnace of the character described, having a pluralityof burners disposed in the rear of the combustion chamber andarranged todischarge a flame towardthe.front of the furnace; a pocket in the rearwall of the furnace; av separate air inlet below the floor of thefurnace for each burner leading from the front to the pocket in the rearwall of the combustion chahiber, the pocket in said'wall forming aseason part of the air flue leading from the front to the fire box,whereby the air is deflected into the pocket, and an oil burner in'saidpocket.

6. A furnace having a plurality of hydrocarbon burners dischargingdirectly into a fire box, recesses in which said burners are located,each of said recesses being supplied with air for combustion through aseparate flue leading from the front to the rear of the furnace, each ofsaid burners being disposed in a recess and adapted to be supplied withair therefrom.

7. In a furnace of the character herein described having a plurality ofhydrocarbon burners disposed in the rear wall of the combustion chamberand adapted to discharge a flame into the combustion chamber; a separateair flue for feeding each burner extending from front to rear of thefurnace' a supplemental air inlet port disposed in t 0 floor of furnaceand communicating with the air line and discharging directly in front ofeach burner, and a recess in which said burn-' ers are located wherebyair passes in contact with the burners on its way to the combustionchamber.

8. In a furnace of the character herein described, an air duct, an airreceiving pocket comprising a recess in the rear wall of the tire boxadapted to receive the burner, the said pocket extending into thefirebox and communicating with the air duct forming a passage leadingfrom the air duct into the fire box whereby a portion of the air supplyis deflected into the pocket, and an oil burner in said pocket arrangedto project a flame into the fire box v 9. In a furnace of the characterherein described, an air-duct, an air receiving'pocket disposed in therear of the fire box and opening directly thereinto, the said pocketforming a part of the communication through which air passes from theoutside to the fire box whereby a portion of the'air supply from the airduct is deflected into the pocket, an oil burner in said pocket, and anoil and steam pipe leading to the burner.

10. In a furnace of the character herein described, an air duct, arecessor pocket in the rear of the fire box for the passage therethrough ofair from the outside to the fire box whereby a portion of the air supplyis deflected into the pocket, an oil burner in said recess dischargingcombined steam and oil'thereinto in the direction of the fire box andadapted to cause the air, passing therethrough to mingle therewith andproject flame into the fire box.

11. In a hydrocarbon furnace, a fine below the floor of the furnace forthe passage of' air from the front of the furnace to the rear of thefire box, a recess in the rear wall of the furnace forming acontinuation of the air flue from the'front to the fire box and adaptedto receive an oil burner therein, an

oil burner in said recess arranged to dis charge combined steam andpetroleum into said recess and mingle with and carry the air in saidrecess into the fire box, air inlet ports in front of theburnerextending through the floor of the furnace to the air flue, whereby apart of the air passing through the air flue will be discharged into the'fire box in front of the burner, and a portion into the recess.

12. An oil burning furnace comprising a combustion chamber having aplurality of hydro-carbon burners disposed in the rear and dischargingtoward the front thereof, 15

and independent passage-way for directing 20 air to a burner.

In witness that I claim the foregoing I have hereunto subscribed my namethis 12th day of J uly, 1906.

CHARLES A. HAMMEL.

W'itness'cs ITENRY T. HAZARD, G. E. HARPJIAM.

